What sound does a cactus make? What a ridiculous question.

And you know the answer if you are on Iracema Beach that borders a neighborhood located in the Brazilian city of Fortaleza. The new sculpture cactus features bells crafted from recycled old fire extinguishers of different sizes, says its creator, the Street Artist and inventor of public art, Narcelio Grud.

People have been grabbing the ropes on this musical piece, each bell creating a different musical note. Mr. Grud has created many musical interventions of his own free will over the last decade that enable people to make music in public space – like the one at a bus stop a few years ago for example.

This one was installed during a big musical event called Férias na Praia de Iracema. It’s a free entrance music event organized by the local government, but you can still make your own music with Grud’s cactus anytime you like. It’s easy, says Grud,

“The bells are activated through the ropes attached to the bell clappers, allowing people to interact with the artwork.”

You can also check out his “Sea Bells” project from a year ago here.

Who is playing this year at the free festival?